How to use dates to create ODV time series

So here is how I encountered this problem:
I wanted to create a three dimensional time series in ODV (say Time on X, Depth on Y and temperature on Z). When I entered the data to ODV using a template similar to this one I realized that although I have date and time of sampling on the spreadsheet, and although ODV reads those fields and they can be used for selecting samples, when I try to set them as axis values the date can't be selected.
After some reading on the ODV user manual, I found out what I need to do in order to use dates for axis is:

•  One field (column) left of the bottom depth field I add a field named "time_ISO8601"
• The value in this field is the sum of the date and time fields
• The field formatting is date format as perscribed in ISO8601  (yyy-mm-ddThh:mm:ss)

Ever since this revelation, I have a new template I use and you can download it here

For those (like me) who like screencasts, here is the process:

Using XYZ tile servers in QGIS

In QGIS 3 and on, the old mapping plugins such as openlayers and its predecessors were replaced by XYZ tile servers. Below, I post a list of the XYZ tile servers I could find and a screencast explaining how to add a new server to your QGIS browser.
This list of XYZ servers was taken from the script linked here who will automatically add the hole list to your browser if you paste it to your python console.

Please, write to me if you find more servers out there. I think its important that we have a list of the servers.

List of available XYZ tile serves

Map Name	Provider	URL
Open map	Terrain map	https://tile.opentopomap.org/{z}/{x}/{y}.png
	Map tiles by Stamen Design	http://tile.stamen.com/toner-lite/{z}/{x}/{y}.png
Stamen Watercolor	Map tiles by Stamen Design	http://tile.stamen.com/watercolor/{z}/{x}/{y}.jpg
Wikimedia Map	OpenStreetMap contributors	https://maps.wikimedia.org/osm-intl/{z}/{x}/{y}.png
Wikimedia Hike Bike Map	OpenStreetMap contributors	http://tiles.wmflabs.org/hikebike/{z}/{x}/{y}.png
Esri Boundaries Places	Esri	https://server.arcgisonline.com/ArcGIS/rest/services/Reference/World_Boundaries_and_Places/MapServer/tile/{x}/{y}/{z}
Esri Gray (dark)	Esri	http://services.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Dark_Gray_Base/MapServer/tile/{z}/{y}/{x}
Esri Gray (light)	Esri	http://services.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer/tile/{z}/{y}/{x}
Esri National Geographic	Esri	http://services.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer/tile/{z}/{y}/{x}
Esri Ocean	Esri	https://services.arcgisonline.com/ArcGIS/rest/services/Ocean/World_Ocean_Base/MapServer/tile/{z}/{y}/{x}
Esri Satellite	Esri	https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}
Esri Standard	Esri	https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}
Esri Terrain	Esri	https://server.arcgisonline.com/ArcGIS/rest/services/World_Terrain_Base/MapServer/tile/{z}/{y}/{x}
Esri Transportation	Esri	https://server.arcgisonline.com/ArcGIS/rest/services/Reference/World_Transportation/MapServer/tile/{z}/{y}/{x}
Esri Topo World	Esri	http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/{z}/{y}/{x}
OpenStreetMap Standard	OpenStreetMap contributors	http://tile.openstreetmap.org/{z}/{x}/{y}.png
OpenStreetMap H.O.T.	OpenStreetMap contributors	http://tile.openstreetmap.fr/hot/{z}/{x}/{y}.png
OpenStreetMap Monochrome	OpenStreetMap contributors	http://tiles.wmflabs.org/bw-mapnik/{z}/{x}/{y}.png
Strava All	OpenStreetMap contributors	https://heatmap-external-b.strava.com/tiles/all/bluered/{z}/{x}/{y}.png
Strava Run	OpenStreetMap contributors	https://heatmap-external-b.strava.com/tiles/run/bluered/{z}/{x}/{y}.png?v=19
Open Weather Map Temperature	Map tiles by OpenWeatherMap	http://tile.openweathermap.org/map/temp_new/{z}/{x}/{y}.png?APPID=1c3e4ef8e25596946ee1f3846b53218a
Open Weather Map Clouds	Map tiles by OpenWeatherMap	http://tile.openweathermap.org/map/clouds_new/{z}/{x}/{y}.png?APPID=ef3c5137f6c31db50c4c6f1ce4e7e9dd
Open Weather Map Wind Speed	Map tiles by OpenWeatherMap	http://tile.openweathermap.org/map/wind_new/{z}/{x}/{y}.png?APPID=f9d0069aa69438d52276ae25c1ee9893
CartoDb Dark Matter	Map tiles by CartoDB	http://basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png
CartoDb Positron	Map tiles by CartoDB	http://basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png
Bing VirtualEarth	Microsoft	http://ecn.t3.tiles.virtualearth.net/tiles/a{q}.jpeg?g=1