To put honestly, Indians are very bad at recording or documenting stuffs.

It's fairly accepted that Hinduism can be attributed to the origins of Veda, not the oldest one being Rig Veda, we have to look for the origins of Rig Veda.

Rig Veda was for a long time transmitted orally because scriptures in Hinduism have a strict oral tradition and the language Sanskrit and the scriptures were composed taking this into account.

Now, even time when Rig Veda was first penned down isn't documented and so it's very difficult to get the time-line of Rig Veda being composed.

Max Muller attributes Rig Veda to be composed at around 1500-2000 B.C. but there have been allegations of this time-line being biased as one can read AncientHistory, ThenAgain, HKNet, Controversies in History.

To put honestly, Indians are very bad at recording or documenting stuffs.

It's fairly accepted that Hinduism can be attributed to the origins of Veda, the oldest one being Rg Veda, we have to look for the origins of Rg Veda.

Rig Veda was for a long time transmitted orally because scriptures in Hinduism have a strict oral tradition and the language Sanskrit and the scriptures were composed taking this into account.

Now, even the time when Rg Veda was first penned down isn't documented making it very difficult to get the time-line of Rg Veda being composed.

Max Muller attributes Rig Veda to be composed at around 1500-2000 B.C. but there have been allegations of this time-line being biased as one can read AncientHistory, ThenAgain, HKNet, Controversies in History.