>>21284709 (PB) Anon bigbraining the meaning behind the D5 and C before D references

bigbraining anon's theory led to digging on CAS.

This led to a doc titled: An Argument for the Keyhole Template for Close Air Support on the Urban Battlefield

https://archive.org/details/DTIC_ADA517794

This doc references a gridded reference graphic (pic rel). "The graphic" was a point 17 emphasized multiple times. (pic rel). Digging on GRG led to an ESRI doc about an ArchGIS tool for GRG (pic rel)

https://solutions.arcgis.com/defense/help/gridded-reference-graphic/

The toolkit references MGRS (Military Grid Reference System), MGRS is a grid system that is uses a Letter and Number labeling scheme. MRGS definition can be be found in this NGA document (pic rel):

https://earth-info.nga.mil/php/download.php?file=coord-grids (downloads a PDF)

Using post timestamps one would be able to create a an MGRS-like grid. Hour 0-23 -A-X, minutes 0-59 → 1-60. Coding this up resulted in 1 post in cell D5, #4217 [https://qagg.news/?q=%23%234217&q2=] (pic rel)

Anon could be stupid.. .whatever