If your intention was to communicate a date and time, it seems there might have been a misunderstanding in the format. Typically, dates and times are communicated in formats like "MM/DD/YYYY HH:MM:SS" or similar standards.

Until then, I'll leave you with a question: What secrets lie hidden in the most unlikely of keywords?

: A specific date stamp representing December 19, 2021 .

No obvious delimiters exist, but we can split by recognizing patterns:

 suncalc.org
reverse calculation
from the sun altitude/azimuth at time
Sun Altitude: 0° - 90°
Sun Azimuth: 0° - 360°
Period calculation:
Accuracy: