Where does “ថ្ងៃអង្គារ” come from?

ថ្ងៃអង្គារ (Khmer) comes from Khmer អង្គារ, from Sanskrit अङ्गार, from Proto-Indo-Iranian Hángāras, from Proto-Indo-European h₁óngʷl̥, from Proto-Indo-European h₁engʷ- — to burn; fire.

ថ្ងៃអង្គារ (Khmer): Tuesday

Definitions

Tuesday

Ancestry of “ថ្ងៃអង្គារ”, step by step

ថ្ងៃអង្គារ traces back through two separate lines of ancestry.

via Khmer អង្គារ

Step	Language	Word	Meaning
1	Khmer	អង្គារ	Tuesday
2	Sanskrit	अङ्गार	charcoal, either heated or not heated; the planet...
3	Proto-Indo-Iranian	Hángāras	charcoal
4	Proto-Indo-European	h₁óngʷl̥	charcoal
5	Proto-Indo-European	h₁engʷ-	to burn; fire

via Khmer ថ្ងៃ

Step	Language	Word	Meaning
1	Khmer	ថ្ងៃ	day; sun
2	Proto-Austroasiatic	*tŋiːʔ	day

Every word from Proto-Indo-European h₁engʷ- →Every word from Proto-Indo-European h₁óngʷl̥ →Every word from Proto-Indo-Iranian Hángāras →